Movement And Position
Overview
How fast is it going? Is it speeding up or slowing down? How far will it travel? These are the questions that launched physics as a science, and they are still the ones you will answer most often in your Edexcel exam. This topic gives you the language and the equations to describe any straight-line motion precisely.
You will learn to read and draw distance-time and velocity-time graphs, calculate speed and acceleration from first principles, and use the key equations - including the powerful relationship between final speed, initial speed, acceleration and distance. Every worked example uses the method examiners reward: state the equation, substitute, solve, and check units.
Objectives
- Plot and explain distance-time graphs
- Know and use the relationship between average speed, distance moved and time taken: average speed = distance moved / time taken
- Investigate the motion of everyday objects such as toy cars or tennis balls
- Know and use the relationship between acceleration, change in velocity and time taken: acceleration = change in velocity / time taken, a = (v - u) / t
- Plot and explain velocity-time graphs
- Determine acceleration from the gradient of a velocity-time graph
- Determine the distance travelled from the area between a velocity-time graph and the time axis
- Use the relationship between final speed, initial speed, acceleration and distance moved: v2 = u2 + (2 x a x s)
Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on Movement And Position. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- What does the gradient of a distance-time graph represent? A) Acceleration B) Speed C) Distance D) Force Answer: B
- A car decelerates from 30 m/s to 10 m/s in 4 s. What is the acceleration? A) 5 m/s squared B) -5 m/s squared C) 10 m/s squared D) -10 m/s squared Answer: B
- On a velocity-time graph, what does the area under the line represent? A) Speed B) Acceleration C) Distance D) Force Answer: C
- An object travels 200 m in 25 s. What is its average speed? A) 5 m/s B) 8 m/s C) 25 m/s D) 175 m/s Answer: B
- A horizontal line on a velocity-time graph means the object is: A) Stationary B) Accelerating C) Moving at constant velocity D) Decelerating Answer: C
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Recommended Books
Practice Mock Questions
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